I have a Nexus 6 and when pairing with my Touareg, I get the option on the head unit to select the connection profile. I choose rSAP and the phone connects. Immediately after connecting, the phone loses its network connection, the head unit states it has connected successfully, and the Bluetooth connection is disconnected.

If I then try and reconnect it connects via HFP.

I have tried the Audi SIM fix channel 2 plugin as the RNS850 is the same as the Audi MMI 3G unit. The same results were encountered.

I have tried installing the Generic (Old) drivers but when I do the Check fails to connect to the SIM. If I use the Generic drivers, everything checks out correctly.